Tongue for shuttles for looms for weaving



Oct. 31, 1933. G DIEDERlCHS 1,933,418

TNGUE FOR SHUTTLES FOR LOOMSFOR WEAVING Filed J'an. 30, 19,31

Patented Oct. 31, 1933v PATENT OFFICE@ WEAVING TONGUE FOR SHUTTLES FOR LOKONIS FOR` Gustave Diederichs, Ste-Colombe-'Les-Veinneon-the-Rhone, France Application January 30,1931, Serial No. 512,456,

and in France July 22, 1930 I 2 Claims. (o1. 1394-207) This invention relates to improvements in tongues'for shuttles for looms for' weaving.

The object of the invention being to `effect such improvements in the construction of the same as to greatly facilitate the introduction of pirns the diameters of which may vary, and to permit the ready removal and renewal of the pirn when required.

' With the above and other objects in view, the inventionvconsists inthe construction, combination and arrangement of devices hereinafter described and claimed. v

In the accompanying drawing,-

Fig. 1 is an axial view partly in section.

Fig. 2 is a detail View of the mounting of the spring on the ring, to an enlarged scale.

Fig. 3 is a transverse section on line 3-3 Fig. 2.

Ink accordance with my invention the spindle a of the tongue is iixed at one end to the head e, a sleeve h is mounted :for rotation on the spindle at the point adjacent the head and its outer end bears against an annular stop shoulder i which r extends around the spindle. A split ring :i is arranged around the end portion of the sleeve next the head and is provided with a rivet lc by which it is closed. A helical spring b which tapers from its center to its ends is arranged around the spindle, its outer end is attached securely to the spindle and its inner end Z is connected to the sleeve and split ring by being tted in a slot with which the split ring is provided, as shown.

Thus by rendering the ring 7 immovable by means of special apparatus and causing the head e to turn the spindle a `andi the end c of the spring the latteris stretched and diametrically contracted which permits the ready introduction of the tube o r pirn on to the spindle Whatever its internaljdiameter may be.

By freeing the ring j the spring b relaxes and owing to the increase in the diameter of its con- Volutions ensures perfect' rigidity of the tube on the spindle.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that y what I claim is:

1. A shuttle tongue for looms, comprising a head, a spindle having one end attached to the head and a helical spring arranged around the spindle and increasing progressively in diameter from its outer end toward the head, said tongue also having means whereby relative rotary movement may beeffected between the spring and the spindle to effect variations of diameter in the convolutions of the spring to facilitate the putting on of a pirn, and said spindle being provided on the endv nextvthe head with a sleeve which is revoluble thereon, and a split ring having closing means and clamped around the sleeve and to which the inner end of the spring is connected.

, 2. A shuttle tongue as claimed in claim 11 lin which the spindle is provided with an annular stop shoulder extending therearound and against v which the outer end of the sleeve bears.

GUSTAVE DIEDERICHS. 

